Google Hangouts, the new unified and cross-platform messaging service announced by Google at I/O, is now live on all platforms. For most of us, we care about Chrome and Android, but if you are an iOS user, you can find it in the App Store as well. Go grab it!

To install to your phone, you’ll need to install through the web Play store for the time being. This replaces Google Talk. Screenshots after the break! 

Google I/O 2013 is next week. Hard to believe, right? It seems like only a few weeks ago that we were freaking out as the Nexus 7, Nexus Q and Jelly bean (Android 4.1) were all being unveiled through Google Play as we were entering the day 1 keynote of 2012′s I/O. But here we are, almost a year removed from that event and six months out from Google’s cancelled winter event that was supposed to feature the Nexus 4, Nexus 10, new version of Jelly Bean (Android 4.2), and an updated HSPA+ version of the Nexus 7. So as we approach next week, we thought we should drop some of our own predictions, include a few rumors that are floating about, and even a few whispers that have entered our inbox over the last week or so.

Ready? Here is our list of Google I/O predictions. 

Chrome beta for Android received an update today that introduced two minor features that actually change the user experience in a semi-major way. For one, as you scroll down web pages, the toolbar will disappear so that you get a fullscreen view. All you need to do is swipe back up ever-so-slightly and it will then reappear, so that you can type in a new search query, change tabs, etc. Second, the omnibox (search box) now holds onto your search queries after you press “enter.” So when search results appear, you can quickly edit or add-on to search queries much easier. Previously, your search queries would show up in the Google Search box of the actual Google website – now they stay in the omnibox.

The rest of the new features and known issues are below. 

Whenever Google Babel does arrive for public consumption, we’re starting to believe it will be everything we have ever asked for in a unified messenger service. We’re talking synced notifications, cross-platform conversation experiences, a new UI, photo sharing, quick access to live video chats, and on-the-record chat history viewing from anywhere. According to sources of ours who have shared new information with us (including a feature list), we’re getting all of this and more. 

Chrome for Android received an update today which includes both password and autofill sync, two features that were previously only available in the beta build of the app. Now, as you sync all of your devices from PC to tablet to phone with your Google account, your passwords and autofill history will come along for the ride. The rest of the update brings performance and stability updates along with a fix for random blank page loads. 

Yesterday, the official Google Voice extension for Chrome received an update that introduced experimental desktop notifications. To our knowledge, this update has nothing to do with a unified Google chat service (internally called Babel) and is simply a stand-alone update and feature for the Google Voice extension. The notifications, if you are on a Windows machine, will look just like the picture we have included above. Again, to our knowledge, this has nothing to do with Google’s new unified chat service that is currently being dogfooded to employees. 

Attention Chrome and Android users, stop filling out those expense reports and take the next 10 minutes to have some fun-time. This morning, a new Chrome experiment is turning any website you choose into a big marble maze game. Using your Android or iOS device as a controller, you tilt and slowly (or quickly) work your way through levels, collecting coins trying to reach the end of the level. 

During a recent discussion with reporters in India, Eric Schmidt took the time to set some things straight in regards to Android, the Chrome OS, and even rumors that Schmidt was looking to leave Google. There has been slight speculation that Chrome and Android would somehow merge, with Andy Rubin leaving Android, and Sundar Pichai taking over both sections, including Chrome and Apps.